feat: manually mirror opencoze's code from bytedance

Change-Id: I09a73aadda978ad9511264a756b2ce51f5761adf

backend/domain/knowledge/service/validate.go

@@ -0,0 +1,82 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package service
+
+import (
+	"context"
+	"fmt"
+
+	model "github.com/coze-dev/coze-studio/backend/api/model/crossdomain/knowledge"
+	"github.com/coze-dev/coze-studio/backend/domain/knowledge/entity"
+	"github.com/coze-dev/coze-studio/backend/pkg/errorx"
+	"github.com/coze-dev/coze-studio/backend/pkg/logs"
+	"github.com/coze-dev/coze-studio/backend/types/errno"
+)
+
+func (k *knowledgeSVC) isWritableKnowledgeAndDocument(ctx context.Context, knowledgeID, documentID int64) (bool, error) {
+	if valid, err := k.isWritableKnowledge(ctx, knowledgeID); err != nil {
+		return false, err
+	} else if !valid {
+		return false, nil
+	}
+
+	if valid, err := k.isWritableDocument(ctx, documentID); err != nil {
+		return false, err
+	} else if !valid {
+		return false, nil
+	}
+
+	return true, nil
+}
+
+func (k *knowledgeSVC) isWritableKnowledge(ctx context.Context, knowledgeID int64) (bool, error) {
+	knowledgeModel, err := k.knowledgeRepo.GetByID(ctx, knowledgeID)
+	if err != nil {
+		return false, fmt.Errorf("[isWritableKnowledge] GetByID failed, %w", err)
+	}
+	if knowledgeModel == nil {
+		logs.Errorf("[isWritableKnowledge] knowledge is nil, id=%d", knowledgeID)
+		return false, errorx.New(errno.ErrKnowledgeNonRetryableCode, errorx.KV("reason", "[isWritableKnowledge] knowledge not found"))
+	}
+	switch model.KnowledgeStatus(knowledgeModel.Status) {
+	case model.KnowledgeStatusInit, model.KnowledgeStatusEnable:
+		return true, nil
+	case model.KnowledgeStatusDisable:
+		return false, nil
+	default:
+		return false, nil
+	}
+}
+
+func (k *knowledgeSVC) isWritableDocument(ctx context.Context, documentID int64) (bool, error) {
+	documentModel, err := k.documentRepo.GetByID(ctx, documentID)
+	if err != nil {
+		return false, fmt.Errorf("[isWritableDocument] GetByID failed, %w", err)
+	}
+	if documentModel == nil {
+		logs.Errorf("[isWritableDocument] document is nil, id=%d", documentID)
+		return false, errorx.New(errno.ErrKnowledgeNonRetryableCode, errorx.KV("reason", "[isWritableDocument] document not found"))
+	}
+	switch entity.DocumentStatus(documentModel.Status) {
+	case entity.DocumentStatusInit, entity.DocumentStatusUploading, entity.DocumentStatusEnable, entity.DocumentStatusChunking, entity.DocumentStatusFailed:
+		return true, nil
+	case entity.DocumentStatusDisable, entity.DocumentStatusDeleted:
+		return false, nil
+	default:
+		return false, nil
+	}
+}